Corrosion of third degree of unspecified foot, sequela

This code signifies a third-degree chemical burn, also known as a corrosion, affecting an unspecified area of the foot, where the acute injury has healed and the patient is now experiencing long-term complications or residual effects. Third-degree corrosions involve full-thickness skin destruction, often extending into subcutaneous tissue, muscle, or bone. The "sequela" designation indicates that the current encounter addresses a condition directly resulting from this past severe chemical injury.

Use this code when documenting follow-up care for a patient who previously sustained a third-degree chemical burn to an unspecified foot, and is now presenting with chronic issues such as scarring, contractures, chronic pain, nerve damage, or non-healing ulcers directly attributable to the original injury. This code is appropriate for encounters addressing the long-term management and treatment of these residual effects.

• Always sequence this sequela code after the code for the specific complication being treated (e.g., scar, contracture).
• Ensure documentation clearly links the current condition to the past third-degree chemical burn of the foot.
• Do not use this code for initial treatment of an acute chemical burn; use the appropriate acute T25.72- code with the correct encounter type.